Man has the possibility of existence after death. But possibility is one thing and the realization of the possibility is quite a different thing.
You will never be happy if you continue to search for what happiness consists of. You will never live if you are looking for the meaning of life.
I wasn't interested in going to the school dances. I wasn't interested in going to the football games. What I wanted was to be in my room painting my walls and doing weird stuff. That's what I wanted and I got to do what I wanted, so that, to me, is my high school experience.